Originally Posted by abaddon3k
it tells me that the login information i provided at start up is incorrect
are you saying you are able to log in and after you have logged in it gives this message? or that it does not log in and immediately says this message when you hit 'Login'?
if the latter is true, then the only solution seems obvious: verify username and password. when you installed ubuntu you would have given a username and password. verify you are typing this information exactly into these boxes. make sure capslock and numlock are on or off, as necessary.
it is very unlikely that a basic login bug like this would have slipped through to the release. is version 8.04.1 a test release or is it 'stable'?